620 Prospect Ave, Oshkosh, WI 54901 Property Records

Winnebago County property record for 620 Prospect Ave, Oshkosh, WI 54901

Property Summary

Property Type	Single Family Home
Details	4 bd · 1 ba · 1,340 sqft · built 1920
Lot Size	0.062 acres (2,700 sqft)
Owner	Individual Name on Record
Last Sale	$185,000 (Mar 2026)
Tax Bill	$2,929 (2024)
Deeds & Mortgages	Mar 2026 Sale
Flood Zone	Zone X (minimal risk)
APN	`05-01980000`

Property Details

APN / Parcel Number

Primary APN	`05-01980000`
Alternative APN	`905-01980000`

Interior

Bedrooms	4 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	2 Stories
Building Area	1,340 sqft Living Area

Exterior

Year Built	Built 1920
Effective Year Built	Effective 1920
Architectural Style	Traditional
Exterior Material	Aluminum/Vinyl
Lot Area	2,700 sqft (0.062 acres)
Lot Dimensions	60 ft deep x 45 ft wide

Utilities, Heating & Cooling

Heating System	HVAC
Heating Fuel	Gas

Location & Zoning

Account Number	905-01980000
Street Address	620 PROSPECT AVE
City	OSHKOSH
State	WI
Zip	54901-3612
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R2
Legal Description	E 45 FT OF W 123 FT OF LOT 23 J A MASTERSONS PLAT OF PART OFBLK 133
Legal Subdivision	J A MASTERSONS
Legal Block	133
Legal Lot Number	23
Jurisdiction	WINNEBAGO WI
Township / Civil Division	OSHKOSH
Census Block Group	2
Census Block	2001
Census Tract	700

Owner

Source: Winnebago County records, as of May 27, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on Record
Mailing Address	620 PROSPECT AVE, OSHKOSH, WI 54901-3612
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 2, 2026 · Amount on Record
Deed Sale	Mar 2, 2026 · Amount on Record
Prior Sale	Jun 27, 2024 · Amount on Record
Deed Document Number	20261962463
Record Updated	Oct 29, 2026

March 2026: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	WINNEBAGO WI
Recording Date	Mar 2, 2026
Property Address	620 PROSPECT AVE, OSHKOSH, WI 54901-3612
Document Number	0001962463
Instrument Date	Feb 23, 2026
Instrument	1962463
Transaction Type	Transfer
Record Updated	Mar 23, 2026
Title Company	LOCAL MODERN TITLE LLC

Transaction

Amount	Amount Recorded
Tax	$555.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	620 PROSPECT AVE, OSHKOSH, WI 54901-3612

Tax Assessment & Valuation

Source: Winnebago County assessment roll, as of May 27, 2026

Property Jurisdictions

Type	Name
State	Wisconsin
County	Winnebago County
Municipality	Oshkosh City
Unified School District	Oshkosh Area School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$156,800 (-) Land $14,100 Building $142,700
2024	$2,929.00 (+24.37%)	$156,800 (+94.3%) Land $14,100 Building $142,700	$163,600 (+40.29%) Land $14,711 Building $148,889
2023	$2,355.00 (+1.12%)	$80,700 (-) Land $9,400 Building $71,300	$116,613 Land $13,583 Building $103,030
2022	$2,329.00	$80,700 Land $9,400 Building $71,300

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective March 26, 2019

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	OSHKOSH WATERWORKS serves 63,000 people · EPA ID WI4710457
Water Source	Surface water
Last State Inspection	Apr 2025
Lead	6 ppb (2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 777 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
TDS Telecom Fiber	8,000 / 8,000
Spectrum Cable	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
Bertram Communications Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20